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   1 /**
   2  * Copyright (c) 2010-2021 Contributors to the openHAB project
   3  *
   4  * See the NOTICE file(s) distributed with this work for additional
   5  * information.
   6  *
   7  * This program and the accompanying materials are made available under the
   8  * terms of the Eclipse Public License 2.0 which is available at
   9  * http://www.eclipse.org/legal/epl-2.0
  10  *
  11  * SPDX-License-Identifier: EPL-2.0
  12  */
  13 package org.openhab.binding.pulseaudio.internal;
  14
  15 import java.util.Collections;
  16 import java.util.Dictionary;
  17 import java.util.Enumeration;
  18 import java.util.HashMap;
  19 import java.util.Hashtable;
  20 import java.util.Map;
  21 import java.util.Set;
  22 import java.util.stream.Collectors;
  23 import java.util.stream.Stream;
  24
  25 import org.openhab.binding.pulseaudio.internal.discovery.PulseaudioDeviceDiscoveryService;
  26 import org.openhab.binding.pulseaudio.internal.handler.PulseaudioBridgeHandler;
  27 import org.openhab.binding.pulseaudio.internal.handler.PulseaudioHandler;
  28 import org.openhab.core.config.core.Configuration;
  29 import org.openhab.core.config.discovery.DiscoveryService;
  30 import org.openhab.core.thing.Bridge;
  31 import org.openhab.core.thing.Thing;
  32 import org.openhab.core.thing.ThingTypeUID;
  33 import org.openhab.core.thing.ThingUID;
  34 import org.openhab.core.thing.binding.BaseThingHandlerFactory;
  35 import org.openhab.core.thing.binding.ThingHandler;
  36 import org.openhab.core.thing.binding.ThingHandlerFactory;
  37 import org.osgi.framework.ServiceRegistration;
  38 import org.osgi.service.component.ComponentContext;
  39 import org.osgi.service.component.annotations.Component;
  40 import org.slf4j.Logger;
  41 import org.slf4j.LoggerFactory;
  42
  43 /**
  44  * The {@link PulseaudioHandlerFactory} is responsible for creating things and thing
  45  * handlers.
  46  *
  47  * @author Tobias Bräutigam - Initial contribution
  48  */
  49 @Component(service = ThingHandlerFactory.class, configurationPid = "binding.pulseaudio")
  50 public class PulseaudioHandlerFactory extends BaseThingHandlerFactory {
  51     private final Logger logger = LoggerFactory.getLogger(PulseaudioHandlerFactory.class);
  52
  53     public static final Set<ThingTypeUID> SUPPORTED_THING_TYPES_UIDS = Collections
  54             .unmodifiableSet(Stream.concat(PulseaudioBridgeHandler.SUPPORTED_THING_TYPES_UIDS.stream(),
  55                     PulseaudioHandler.SUPPORTED_THING_TYPES_UIDS.stream()).collect(Collectors.toSet()));
  56
  57     private final Map<ThingHandler, ServiceRegistration<?>> discoveryServiceReg = new HashMap<>();
  58
  59     @Override
  60     public boolean supportsThingType(ThingTypeUID thingTypeUID) {
  61         return SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID);
  62     }
  63
  64     @Override
  65     public Thing createThing(ThingTypeUID thingTypeUID, Configuration configuration, ThingUID thingUID,
  66             ThingUID bridgeUID) {
  67         if (PulseaudioBridgeHandler.SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID)) {
  68             return super.createThing(thingTypeUID, configuration, thingUID, null);
  69         }
  70         if (PulseaudioHandler.SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID)) {
  71             ThingUID deviceUID = getPulseaudioDeviceUID(thingTypeUID, thingUID, configuration, bridgeUID);
  72             return super.createThing(thingTypeUID, configuration, deviceUID, bridgeUID);
  73         }
  74         throw new IllegalArgumentException("The thing type " + thingTypeUID + " is not supported by the binding.");
  75     }
  76
  77     private void registerDeviceDiscoveryService(PulseaudioBridgeHandler paBridgeHandler) {
  78         PulseaudioDeviceDiscoveryService discoveryService = new PulseaudioDeviceDiscoveryService(paBridgeHandler);
  79         discoveryService.activate();
  80         this.discoveryServiceReg.put(paBridgeHandler,
  81                 bundleContext.registerService(DiscoveryService.class.getName(), discoveryService, new Hashtable<>()));
  82     }
  83
  84     private ThingUID getPulseaudioDeviceUID(ThingTypeUID thingTypeUID, ThingUID thingUID, Configuration configuration,
  85             ThingUID bridgeUID) {
  86         if (thingUID == null) {
  87             String name = (String) configuration.get(PulseaudioBindingConstants.DEVICE_PARAMETER_NAME);
  88             return new ThingUID(thingTypeUID, name, bridgeUID.getId());
  89         }
  90         return thingUID;
  91     }
  92
  93     @Override
  94     protected void removeHandler(ThingHandler thingHandler) {
  95         ServiceRegistration<?> serviceRegistration = this.discoveryServiceReg.get(thingHandler);
  96         if (serviceRegistration != null) {
  97             PulseaudioDeviceDiscoveryService service = (PulseaudioDeviceDiscoveryService) bundleContext
  98                     .getService(serviceRegistration.getReference());
  99             service.deactivate();
 100             serviceRegistration.unregister();
 101         }
 102         discoveryServiceReg.remove(thingHandler);
 103         super.removeHandler(thingHandler);
 104     }
 105
 106     @Override
 107     protected ThingHandler createHandler(Thing thing) {
 108
 109         ThingTypeUID thingTypeUID = thing.getThingTypeUID();
 110
 111         if (PulseaudioBridgeHandler.SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID)) {
 112             PulseaudioBridgeHandler handler = new PulseaudioBridgeHandler((Bridge) thing);
 113             registerDeviceDiscoveryService(handler);
 114             return handler;
 115         } else if (PulseaudioHandler.SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID)) {
 116             return new PulseaudioHandler(thing, bundleContext);
 117         }
 118
 119         return null;
 120     }
 121
 122     @Override
 123     protected synchronized void activate(ComponentContext componentContext) {
 124         super.activate(componentContext);
 125         modified(componentContext);
 126     }
 127
 128     protected synchronized void modified(ComponentContext componentContext) {
 129         Dictionary<String, ?> properties = componentContext.getProperties();
 130         logger.info("pulseaudio configuration update received ({})", properties);
 131         if (properties == null) {
 132             return;
 133         }
 134         Enumeration<String> e = properties.keys();
 135         while (e.hasMoreElements()) {
 136             String k = e.nextElement();
 137             if (PulseaudioBindingConstants.TYPE_FILTERS.containsKey(k)) {
 138                 PulseaudioBindingConstants.TYPE_FILTERS.put(k, (boolean) properties.get(k));
 139             }
 140             logger.debug("update received {}: {}", k, properties.get(k));
 141         }
 142     }
 143 }